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<!-- <script>
        function SuperType(name){
  this.name = name;
  this.colors = ["red", "blue", "green"];
}
SuperType.prototype.sayName = function(){
  alert(this.name);
};

function SubType(name, age){
  // 继承属性
  // 第二次调用SuperType()
  SuperType.call(this, name);
  this.age = age;
}

// 继承方法
// 构建原型链
// 第一次调用SuperType()
SubType.prototype = new SuperType(); 
// 重写SubType.prototype的constructor属性，指向自己的构造函数SubType
SubType.prototype.constructor = SubType; 
SubType.prototype.sayAge = function(){
    alert(this.age);
};

var instance1 = new SubType("Nicholas", 29);
instance1.colors.push("black");
alert(instance1.colors); //"red,blue,green,black"
instance1.sayName(); //"Nicholas";
instance1.sayAge(); //29

var instance2 = new SubType("Greg", 27);
alert(instance2.colors); //"red,blue,green"
instance2.sayName(); //"Greg";
instance2.sayAge(); //27
console.log(instance2,'---')
</script> -->
<script>
  async function getData() { 
  return await Promise.resolve("I made it!");
}
const data = getData();
console.log(data);
</script>
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